
PROTON_USE_WINED3D=1 %command%
works with vulkan on proton 9

Works mostly the same as on Windows. The game will slow down to being unplayable when run with high quality setting on Linux.
When I play on Windows, I get consistent 60FPS performance on the highest settings. On the same machine, when I play on Linux, I must reduce "Graphics Quality" setting to medium or lower, otherwise the game will play on some maps and in story mode in ~5 frames per second making it completely unplayable.
Seemingly, some setting in "Graphics Quality" "High" option causes a significant drop in performance on Linux in some situations.
I suspect something lightning related causes the slowdown on Linux. It'd be appreciated if a fix for that were released. The game is perfectly playable on low settings (possibly on medium as well) but it looks significantly worse at lowest settings.

Could not verify online as I have no friends that also have this game.
Works perfectly
Funciona perfeitamente com qualquer proton
O modo online ainda é via remote to play da steam, ou seja, só dá pra jogar com amigos da steam

DXVK_ASYNC=1 PROTON_HIDE_NVIDIA_GPU=0 PROTON_ENABLE_NVAPI=1 %command%
certain settings seem to slow down the game significantly when combined but not when using seperately. Setting launch options fixed most my slowdown issues
played a small handful of local duels. seemed fine
Without tinkering the game ran horrendously slow on high settings but perfectly fine on all low settings
Runs OOTB

Found no significant problem
I've experienced some slowdown during Steam Remote Play, but I believe that is due to my PC's specs

6.20-GE-1 GloriousEggroll
Proton-6.20-GE-1 GloriousEggroll
Recent Steam Runtime update broke custom Proton versions up to 6.19; had to update manually to 6.20-GE to make it work.

As of Father Zera update, the game fails to initialize engine
With DXVK, throws "InitializeEngineGraphics failed" error. With PROTON_USE_WINED3D=1, invokes the initial loading screen but crashes when loading is finished.
seems to run fine out of the box, but I did not try multiplayer/Coop
Gameplay is fine
No video playing for the tutorial parts. Otherwise, gameplay is fine. I am using a 360 controller. Will be reserving judgment on other aspects as the game is in pre alpha.

Controller not detected, but not always
High setting is slow on 1050ti (That is not an open world!!!)

I haven't tested a controller, but it works on k/m. You can run most of the demo, even on lower end hardware like mine.
Video tutorials with no actual video.
On my hardware I could run the empty map only, even on lowest. High settings on empty map ran fine but would suffer degradation after some time.
Frame rate seems to be tied to game speed. Not sure if this is a Linux/Proton specific issue or a game bug.

5.21-GE-1 GloriousEggroll
GloriousEggroll's 5.21-GE-1
Occasional weird behavior of bots in Survival mode (stuck in a single repetitive move etc). Might be generic game AI bugs but haven't met those on native Windows yet. Needs further testing.

Normalmente solamente será necesario bajar la resolución y una tarjeta nvidia aceptable con driver privativo.
Debería calcular una resolución óptima automáticamente. El juego inicia con la mayor posible lo cual relentiza el funcionamiento, una vez que se reduce la resolución el juego funciona satisfactoriamente.
Controller not recognized on initial launch, worked on the next attempt
The video in the beginning and the animations from the tutorial section jump from scene to scene